paul ciancia told police a friend dropped him off in front of terminal three on friday, he was carrying an assault rifle and five 30-round magazines and in his bag hundreds of more rounds. this morning, he's hospitalized, heavily sedated and under armed guard. theresa garcia reports. >> reporter: scott green was right there and ran for his life when a shooter opened fire friday at los angeles international airport. >> like he had his gun trained down like this, and he took two shots. >> reporter: police say it was 23-year-old paul ciancia who killed one tsa agent and wounded two others. investigators found a note in his duffel bag saying he wanted to kill multiple tsa agents, but so far the fbi has not found evidence of any previous run-ins he may have had with the agency. >> i thought he was just a random passenger, very calm, stoic face. >> reporter: billy bay saw the suspect walk in with an assault rifle. he says it could have been worse. >> about 100 people under benches around him hiding. if he wanted to continue to shoot, he could have. i've read since he was targeting tsa, so may